Expansion-joint strip



. S. B. WARING.

EXPANSION JOINT STRIP. APPLICATION FILED Amaze. 1'913.

1,328,107. 7 Q Pdt nted Jan. 13,1920.

/ my invention has U E sTATEs ATENT oFFIoE.

swI ToN B. WABING, or WA LINGFORD, PENNSY V NIA, 'AssIGNoR o THE WARING-UNDERWOOD ooMPANY, or PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF 1PENNSYLVANIA.

ExP NsIoN-JoiNT STRIP.

To all whom it may conoem:

Be it known that'I, SWINTON B.. WARING, a citizen of the UnitedStates,and a resident of Wallingford, Delaware county, Pennsylvania,have invented certain Improvements in Expansion-Joint Strips, of whichthe following is a specification. My invention relates to street paving,and one object of my invention is to provide an improved form ofexpansion joint for block pavements; the filling for such joint, ac-

cording to my invention, being made in continuous lengths and disposedbetween the blocks forming the pavement, andhaunches orshouldersprovided by the curbing, rails of the car track, or othersimilar means.

A further object of my invention is to provide a preformed strip ofasphalt or equivalent material. as the filler to form the expansionjoint, which strip is reinforced, and a further feature ofmy inventionis the method or'process of preparing the improved expansion strip.Theseand other features of my invention are more fully describedhereinafter, "refer ence being had to the accompanying drawings, inwhich: i 1 Figure 1, is a perspective view illustrating a section of apaved street to which the expansion joint fillin forming the subject oflmen applied; i Fig. 2, is a perspective .view illustrating thepreformed strip forming the expansion joint filling; I Fig. 3, is asectional view on the line 3-3, Fig.2; 3 Fig. 4, is across sectionalview-of a pavement showing shoulders or curbing with a complete blockpavement disposed between As is well known, it is. necessary to provideexpansion joints in constructing block avements, inasmuch as temperaturechanges in winter and summer affect the condition or position of thepavement or the elements forming the same unless means are provided totake care of t e usua expan i n and 90.

traction,

Specification of Letters Patent. Patented J an. 13, 1920. 7 Applicationfiled April 26, 1913. Serial No. 763,807. 7

v The general practice heretofore in thelaying ofblock pavements,whether of brick, stone, wood, or the like, has been to place temporaryfillers, usually boards, adjacentto the curb between the same and theblocks which are being laid, and then after the pavement has been laidand rolled, these boards are removed and molten asphalt, tar,

cracks between the blocks communicating with the space adjacent thecurb. In other instances, the presence of sand or small' stones maycause the molten material to arch in the space and form an imperfectjoint.

I propose to overcome this difficulty by providing a strip of preformedasphalt or,

equivalent material which is laid directly adjacent the curb or otherhaunch or shoulder in the street and against which the first row ofblocks will be placed. To facilitate handling of this preformed strip ofasphalt,

I preferably reinforce the same.

In the drawing, 1, 1, represent the blocks of a pavement, which may beof brick, stone, or the like, disposed upon a suitable bed of concreteor equivalent material 2, and between the rail 3 of a car-track on oneside,

and the curb 4 of a pavement 5 on the opposite side. The space below theupper and lower flanges of the rail may be filled with concrete, cementor the like, indicated at 6, and interposed between the curb and'thepaving blocks and the filling block for the rail and the paving blocksare filling strips 10 of preformed asphalt or equivalent material toprovide expansion joints. These strips are approximately an inch thick,al-

though they may be thicker orthinner, de-

pending upon the particular position or use p to which they are to beput; they are approximately the height ofthe blocks with which they areused, and they may be made in lengths of about five feet.

In Fig. 4, I have shown an ordinary block pavement without tracks,inwhlch blocks 1" are laid upon a concre e bed 2, with the fillingstrips 10 of preformed asphalt .forming the expansion joints interposedbetween the aving blocks and the curbing.

Tiie preformed strips may be made in any suitable manner, but I havefound it convenient to provide a box or mold 11 of the depth, len th andwidth of a full-sized strip, whic box or mold is first prepared byplacing a strip or sheet of paper on the bottom of the same, asindicated in Fig. 5, and then the box or mold may be filled with moltenasphalt or equivalent material, as shown in Fig. 6, leaving the paperreinforcing material attached to one surface of the strip or block thusformed. When cool,

' the strip may be readily removed from the box or mold and is thenready for use. Various kinds of paper may be used for reinforcing thestrip of asphalt or equivalent materlal, and in practice I have used agood grade of the so-called tar pa er, which is of a fibrous nature, andtoug long fiber papers are to be preferred. If desired, textile fabricmay be employed in lieu of the paper, and when such fabric is used itmay be disposed within the strip of asphalt; the formation of the samebeing modified to secure such result.

The exposed surfaces of the asphalt strip may be dusted with finemineral matter,

cement or the like, so that the natural stickiness of the asphalt willbe overcome; facilitating the handling of the finished block.

form an expansion joint.

The block or strip forming the subject of my invention is cheap, easilyand quickly made, readily handled, and performs the desired function ina'better mannerthan the ordinary material poured into a space to Itsemployment is much cheaper than the old method of leaving a joint to befilled; and its reinforcement insures its ready handling in desirablelengths.

I claim:

1. A preformed strip for use as an expansion joint filler in theconstruction of street paving comprising anelongated strip of asphalthaving a reinforcement of paper.

2. A preformed strip for use as an expansion joint filler in theconstruction of street paving comprising an elongated strip of asphalthaving a reinforcement of paper secured to one surface of the same.

3. A preformed and elongated strip for use as an expansion joint fillerin the construction of street paving, said strip being made of asphaltand having a longltudinal' reinforcement of long'fiber aper.

In testimony whereof I ave signed my name to this specification in thepresenceof two subscribing witnesses.

SWIN TON B. WARING.

Witnesses J. ,R. MARTIN,

MILTON LANCASTER:

